Carburetor



1964 M. F. STERNER ETAL 3,143,580

CARBURETOR Filed March 6, 1961 INVEVTORS MELVIN F. STERNER y RIGHRD R. HARROUN United States Patent Ofi ice 3,143,580 Patented Aug. 4, 1964 3,143,580 CARBURETOR Ivielvin F. Sterner, Bloomfield Hills, and Richard R.

Harroun, Orchard Lake, Mich, assignors to Holley Carburetor Company, Warren, Mich, a corporation of Michigan Filed Mar. 6, 1961, Ser. No. 93,791 2 Claims. (Cl. 2611) The invention relates to carburetors for use with internal combustion engines or similar devices and refers more specifically to carburetors including means for mounting air filters of difierent size thereon.

In the past carburetors for use in combination with an air filter have been provided with a singular annular flange of small radial extent around the air intake passage thereof defining a mounting ring over which the air filter was mounted. Therefore since the mounting flange of an air filter may have a diameter proportional to the size of the filter, past carburetors have usually been suitable for mounting an air filter of only one size.

This restriction in the size of air filter which can be mounted on a given carburetor is undesirable. This is particularly true in view of the ditferent air filter size requirements in many installations in which the same carburetor may be used. For example, the air filter required by a truck and passenger car using the same carburetor may be of substantially different size. Further with the trend toward offering optional equipment of different sizes with new automobiles it is desirable to provide a carburetor including means by which air filters of different predetermined size may be easily installed thereon.

It is therefore one of the objects of the present invention to provide a carburetor including means for mounting air filters of different size thereon.

Another object is to provide a carburetor including members on the top thereof defining a plurality of concentric rings to which air filters having difierent diameter mounting means may be secured.

Another object is to provide a carburetor including an air horn and fuel bowl cover having a choke well surrounded by a vertically extending flange, a pair of choke mounting lugs, and a power valve housing positioned angularly about a central mounting post for an air filter and having arcuate radially outer surfaces defining a mounting ring for the air filter, said air horn and fuel bowl cover further including a radially extending skirt having a plurality of lugs spaced angularly thereabout defining a second mounting ring for an air filter of different size concentric with the first mounting ring.

Another object is to provide a carburetor having means for mounting air filters of different size which is simple in construction, economical to manufacture and eflicient m use.

Other objects and features of the invention will become apparent as the description proceeds, especially when taken in conjunction with the accompanying drawing, illustrating a preferred embodiment of the invention, wherein:

FIGURE 1 is a top view of a carburetor including means for mounting air filters of different size thereon constructed in accordance with the invention.

FIGURE 2 is an elevation view of the carburetor illustrated in FIGURE 1.

With particular reference to the figures of the drawing one embodiment of the present invention will now be disclosed.

In accordance with the invention the carburetor is provided with means for alternatively mounting air filters 12 and 14 having different diameter mounting flanges 13 and 15' respectively. The means for mounting the air filter 12 on the carburetor 10 includes the choke well flange 16, the choke valve mounting lugs 18 and 20 and the power valve housing 22. Mounting means for the air filter 14 include the abutments 24. The abutments 24 define a mounting ring for the air filter 14 concentric to the mounting ring for air filter 12 defined by the choke well flange 16, choke valve mounting lugs 18 and 20 and power valve housing 22.

More specifically the carburetor 10 includes the throttle body and fuel bowl member 26, the metering spacer 28 and the air horn and fuel bowl cover 30. The air horn and fuel bowl cover portion 39 of the carburetor 10 includes the choke well 32 having the upstanding flange portion 16 thereabout which choke well houses the choke actuating mechanism 34 as illustrated.

The air horn and fuel bowl cover 30 further includes choke valve mounting lugs 18 and 20 integral with flange 36 around the air intake passage 37 of the carburetor in which the choke valve 38 is mounted. Additionally carburetor 19 includes a power valve housing 22 which serves also to mount the air filter clamping stud 40 by means of a bracket 42 secured thereto by convenient means such as bolt 44.

In the past and particularly in single barrel carburetors a small radially extending lip has been provided a short distance from the outer end of the flange 36 around the carburetor air intake passage to provide a mounting for air filters. With such structure it was possible to mount air filters on the carburetors which air filters had a mounting flange diameter of a single predetermined size. As indicated above this has particular disadvantages in that it may be desirable to place air filters having diiferent capacities and therefore diflerent mounting flange diameters on a single carburetor. Also, due to model changes it may be desirable to place air filters on a single carburetor having the same capacity but ditferent mounting flange diameters.

Thus in accordance with the present invention the choke well flange 16, choke valve mounting lugs 18 and 20 and power valve housing are provided with arcuate radially outer surfaces which define a ring over which an air filter 12, shown in broken section in FIGURES 1 and 2, having a predetermined mounting flange diameter may be secured by means of the center stud 40 and wing nut 46.

Further the air horn and fuel bowl cover portion 30 of the carburetor 16 is provided with a radially extending skirt 48 having abutments 24 spaced angularly thereabout to define a second ring concentric with the ring defined by the choke well flange 16, choke mounting lugs 18 and 20 and power valve housing 22. Thus an air filter 14 having a second predetermined mounting diameter which air filter is indicated in broken lines in FIGURES 1 and 2 may be mounted on the carburetor 10 alternatively with the air filter 12.

Thus it can be seen that in accordance with the invention simple, economical and eflicient means are provided by which air filters having different predetermined mounting diameters may be mounted on a single carburetor.

The drawings and the foregoing specification constitute a description of the improved carburetor in such full, clear, concise and exact terms as to enable any person skilled in the art to practice the invention, the scope of which is indicated by the appended claims.

What we claim as our invention is:

1. A carburetor for use with internal combustion engines or similar devices, including an air horn and fuel bowl cover member having a horizontally extending substantially flat skirt portion, an air intake passage and a choke well extending through said skirt portion, a choke well flange around said choke well extending vertically upwardly from the skirt portion, choke valve mounting lugs secured to and extending vertically upwardly from the skirt portion of the carburetor air horn and fuel bowl cover member at opposite sides of the air intake passage and a power valve housing secured to and projecting ver tically above said skirt portion, said choke well flange, choke valve mounting lugs, and power valve housing providing a plurality of arcuate surfaces angularly spaced about the air intake passage defining a first air filter mounting ring and a plurality of separate abutments secured to the skirt portion of said carburetor air horn and fuel bowl cover member in angularly spaced relation radially outwardly of the first defined air filter mounting ring, said separate abutments having arcuate radially outer surfaces thereon defining a second air filter mounting ring on said skirt portion.

4 2. Structure as set forth in claim 1 wherein the said first and second air filter mounting rings are concentric and are centered with respect to the air intake passage through the skirt portion of the carburetor air horn and fuel bowl cover member.

References Cited in the file of this patent UNITED STATES PATENTS 1,926,841 Donaldson Sept. 12, 1933 2,646,293 Gray July 21, 1953 2,698,670 Sebok Jan. 5, 1955 2,822,885 Sebok et a1 Feb. 11, 1958 2,921,775 Moseley Jan. 19, 1960 3,011,770 Stoltman Dec. 5, 1961 

1. A CARBURETOR FOR USE WITH INTERNAL COMBUSTION ENGINES OR SIMILAR DEVICES, INCLUDING AN AIR HORN AND FUEL BOWL COVER MEMBER HAVING A HROIZONTALLY EXTENDING SUBSTANTIALLY FLAT SKIRT PORTION, AN AIR INTAKE PASSAGE AND A CHOKE WELL EXTENDING THROUGH SAID SKIRT PORTION, A CHOKE WELL FLANGE AROUND SAID CHOKE WELL EXTENDING VERTICALLY UPWARDLY FROM THE SKIRT PORTION, CHOKE VALVE MOUNTING LUGS SECURED TO AND EXTENDING VERTICALLY UPWARDLY FROM THE SKIRT PORTION OF THE CARBURETOR AIR HORN AND FUEL BOWL COVER MEMBER AT OPPOSITE SIDES OF THE AIR INTAKE PASSAGE AND A POWER VALVE HOUSING SECURED TO AND PROJECTING VERTICALLLY ABOVE SAID SKIRT PORTION, SAID CHOKE WELL FLANGE, CHOKE VALVE MOUNTING LUGS, AND POWER VALVE HOUSING PROVIDING A PLURALITY OF ARCUATE SURFACES ANGULARLY SPACED ABOUT THE AIR INTAKE PASSAGE DEFINING A FIRST AIR FILTER MOUNTING RING AND A PLURALITY OF SEPARATE ABUTMENTS SECURED TO THE SKIRT PORTION OF SAID CARBURETOR AIR HORN AND FUEL BOWL COVER MEMBER IN ANGULARLY SPACED RELATION RADIALLY OUTWARDLY OF THE FIRST DEFINED AIR FILTER MOUNTING RING, SAID SEPARATE ABUTMENTS HAVING ARCUATE RRADIALLY OUTER SURFACES THEREON DEFINING A SECOND AIR FILTER MOUNTING RING SAID SKIRT PORTION. 